Wagon-jack.



P. J. FBLDT. Y

WAGON JAGK, APPLIOAT-ION FILED JULY 19,"190'L FERDINAND FELDT,OF'PEQRIA, ILLINOIS.

WAGON-JACK.

Specification of Letters Patent.

Patented Oct. 19, 1909.

Application `filed July 19, 1907. Serial No. 384.496.

To all whom it 'may concern: l

Be it known that I, FERDINAND J. FELDT, a citizen of the United States,residing at Peoria, in the county of Peoria and State of Illinois, haveinvented certain new anduseful Improvements in Wagon-Jacks; and I dohereby declare that the following'is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to wagon dumps, and has reference moreparticularly to devices wherein screw raising means are employed.

The object of my invention is to provide a screw jack which is simple inconstruction and operation, and to provide a loose connection betweenthe raising frameand screw whereby binding of the screw is prevented;also to so support each end of the raising platform in connection withthe screws for raising same that the bearing at each end will be exactlyupon and in the vertical plane of the centers of the screws.

In the accompanying drawing, which illustrates my invention, Figure 1 isa top view of a machine embodying my improvements, a portion thereofbeing broken away to permit an enlarged view to be shown; Fig. 2, avertical transverse sectional view on the line a-a of Fig. 1, looking inthe direction indicated by the arrow intersecting said line; Fig. 3 anoblique longitudinal sectional view of the gearing at the left hand endof Fig. 1, taken on the line of the screw; Fig. 4 a top view of the baseplate of the screw standard; Fig. 5 a perspective view of the nut whichoperates on said screw; and Fig. 6 a sectional view of the castingwithinwhich the nut operates. Fig. 7 is a view of the knuckle section) whichcouples the stub and intermediate shafts.

The base of this wagon jack consists of the two parallel planks 10-10which are connected at their ends by means of the transverse timbers11-11 and oppositely inclined so that a wagon may be easily drawn uponand withdrawn from the elevating frame arranged therebetween. Thiselevating frame comprises the timbers 12-12 which are arranged inparallel relation, to t loosely inside the upper edges of the planks10-10 and the ends of said timbers which extend soas to rest upon thetransverse timbers 11-11 are connected as hereafter descrlbed.

tion on said jack so as to raise the forward 1 end of the wagon withoutmaterially changing the position of the rear wheels of the wagon. Thescrews 13 are threaded in the same vdirection and each has the lowerreduced end portion l'thereof supported in the step or socket 16 in theupper face of the standard base plate 17, one of which is secured on theupper face of each transverse timber intermediate of the inclined planks10-10.

Said standard base plates are of the same construction and arecorrespondingly arranged on the transverse timbers 11-11 and havealining bearings 18 and 19` thereon through which the transverse shaft20 extends and in which it is journaled. Intermediate of the bearings 18and 19 the standard base plate is provided with the opening 21 and thetransverse timber 11 is cut away as at. 22 to provide for the bevel gear23 vwhich is fixed on said shaft as by means of the bolt 24 and mesheswith a corresponding bevel gear 25 which is xed on the lower end of thescrew 13 just above the step or socket 16. Parallel with the bearing 18and atV each side thereof are the flanges 26 and 27 which extendupwardly at the same inclination as the screw 13 and have the lower endsof the four standards lll bolted thereto as shown in the drawing. The

plate 17 projects beyond the flanges 26 and 27 and is provided withperforations 29 through which bolts may be passed for securing saidplate on the transverse timbers. The standards 14 above described extendupwardly parallel with the screw 13 and are connected at their upperends to the four corners of the plate 30 by means of bolts 31 which` arepassed through the downwardly extending ianges 32 of said plate. Thisplate has the bearing 33 centrally arranged therein which receives thereduced end of the screw 13 therein. The angle iron standard is bracedon its leaning side by means of a rod 34 which is bolted at its upperend to the top of the angle iron standard and has the lower end thereofsecured to the base of the wagon jack as at 35. On each screw 13 is anut 36 which has the elongated cylindrical body portion 37 and anannular flange 38 at the lower end thereof. The flange 38 has the ridges39 arranged diametrically on the upper face thereof and extending fromfronty to back of the machine, and arranged diametrically on the outerface of the elongated portion 37 of the nut at a quarter turn from theridges 39 are the ribs 40 which extend upwardly from the flange 38 asuitable distance for the purpose hereafter described.

The timbers of this elevating frame are yconnected at each end to thecasting 4l by means of short angle irons 42 which are bolted at theirinner ends to said casting 41 as at 43 and have their outer ends boltedto said timbers 12-12 by means of the long bolts 44, blocks 45 beinginterposed between the ends of the angle irons 42 and the timbers 12-12to provide for required arrangement of the parts. The elevating frame isdesigned to occupy a horizontal position and the nut 36 consequently isdisposed at an angle to the casting 41 which is provided with anobliquely disposed opening 46 within which the elongated body port-ion37 of the nut loosely lits, said part being engaged when in operation bythe ridges 39 on said nut, which permit considerable oscillation of thepart 37. The lateral walls of the opening 46 are provided with thegrooves 48 which are diametrically arranged therein and of suitabledimensions to receive the ribs 40 of the nut 36 loosely therein so as topermit oscillation of the part- 37 and hold the nut from rotation.

The stub shaft 48l projects beyond the transverse timber 11 at one endof the wagon jack, A frame 51 is bolted to that end of the wagon jack,projects beyond the end thereof and is supported by the blocks 52 whichare bolted to the transverse timber 11 asat 53, This frame 51 isprovided with a bearing 54 in whichy the outer end of the shaft 49 isjournaled and intermediate of the bearings 54 and 18 a small spur gear55 is fixed vonthe shaft 20 as by means of the bolt 5 6. Above the shaft2O is a short shaft 57 which is journaled in the bearing 58 of .thefra-me 51 and also is journaled inthe plate 59 which is bolted on theside of the angle iron standard as at 60. Intermediate of the bearings58 and 59 is a small spur gear l'vvhich is fixed thereon as by means ofthe bolt 62 and meshes with the spur gear 55 on the shaft 20. On theouter end of the shaft 57 adjacent the bearing 58 is the large two facedbeveled gear 63 which is fixed on said sha-ftby means of the bolt 64.Extending at right angles to the sha-ft 57 across the outer face of thelarge beveled gear 63 is the shaft .65. This shaft 65 is journaled inbearings 66 and has the collars 67 secured thereon outside the bearings66 by means of the set screws 68vvhereby said shaft is held againstlongitudinal movement in said bearings. The end of this shaft beyond thecollar may est/',061

be squared as at 69 for connection with some suitable motor. Looselymounted on the shaft 65 adjacent the inner face of the bearing 66 is abeveled gear 70 which meshes with the outer row of teeth of the twofaced beveled gear 63 and loosely mounted on the shaft 65 adjacent theinner face of the bearing 66 is a similar bevel gear 71 which mesheswith the inner row of gear teeth on the two faced gear 63, and each ofsaid bevcledgcars 70 and 71 is provided on its inner face with theclutch lugs 72. Intermediate of the beveled gears 71 and 72 is a clutchmember 73 which is keyed on the shaft at 74 so as to slidelongitudinally thereof, said clutch member being adapted to be moved toengage the clutch lugs of either of the beveled gears 70 or 71, or to bemoved out of engagement with both.

Mounted in brackets 75 on the frame 51 parallel with the shaft andextending above the shift-able clutch member 73 is a rod 7 6 whichA isbent at its inner end to form the arm 7 7 whereby the rod 76 may beoscillated. Secured on the rod 76 above the clutch member 73 is the arm78 which extends downwardly and is forked at its lower end to extendaround the clutch 73 and is provided with inwardly extending fingerswhich project into the annular groove 79 of said clutch member 73whereby the clutch may be shifted longitudinally of the shaft 65 by t-heoscillation of the rod 76. This lever 78 may extend above its connectionwith the rod 76 and be provided with a terminal to which a rod may beconnected for operating the clutch from a distance. The arm 77 of therod 76 extends toward the front of the wagon jack and is provided at itsend with an opening through which is passed the lower end of the triprod 80. This rod extends substantially parallel with the adjacentstandard, the lower end 81 thereof being bent at an angle to passthrough t-he opening in the end of the arm 77 and being held in place bymeans of cotter pin 82 or other suitable means. This rod is held inposition substantially parallel with the standard by means of the eyebolt 83 which is secured to the outer end of the adjacent angle iron 42and encircles the rod 80, said eye bolt being thus adapted to movelengthwise of said rod as the elevating frame is raised and lowered. Onthe rod 80 above and below the eye bolt 83 is a collar 84 which may beadjusted thereon to regulate the shifting of the clutch 73 ashereinafter apparent. The stub shaft 48 is connected with stub shaft 48bby means of the intermediate shaft 49 the said stub shafts being squaredoff at their inner ends and likewise the ends of the intermediate shaft49, and the respective ends of shaft 49 are coupled together with thestub shafts through the knuckles 48c and 48d in the manner shown inFigure 7 wherein it appears that the 85 which may be providedintermediate of the strips 12 of the elevating frame.` The clutch 73 isthen shifted to engage the clutch lugs of the gear whereby thesaidgearing is locked to move with the shaft and turn the two facedbevel gear 63 and operate the shaft 49. The turning of the shaft 49causes shaft 57 to be turned through the intermeshing of the spur gearwheels 55and 61 and such turning of the respective parts causes screws13 also to be turned simultaneously therewith through the intermeshingof the beveled gears 23 and 25, at each end of the -shaft 13. Theturning of the screws 13 moves the nuts 36 upwardly thereon, therebycarrying the elevating frame upwardly. When the elevating frame hasreached the required position the eye bolt 83 engages the collar 84 andswings the arm 77 and lever 78, thereby moving the clutch 73 out ofengagement with the clutch lugs of the bevel gear 70 leaving theelevating platform in the elevated position. For loweringthe elevatingplatform, the clutch 73 is shiftedv to engage the clutch lugs of thebevelgear v"71 thereby operating the screws 13 in the `reverse directionand permitting the elevating platform to move downwardly. Then theelevating platform nears the lowermost position, the eye bolt 83 engagesthe lower col-4 lar 86 on the rod 80 and shifts the clutch 73 out ofengagement with the lugs on the bevel gear 71. s Y 4 It is obvious thatthe construction herein may be modified and changed without departingfrom the principle of my invention; that the object sought to beobtained by supporting the frame in connection with the nuts in a loosemanner to facilitate oscillation to prevent binding upon the screw maybe attained in many ways, but I prefer the embodiment shown in thedrawings and de scribed in the specification. l

It will be observed that on acount of the ends of the platform beingjoined to the lateral extensions from the rockable vcasting supportedupon the nuts carried upon the screw that the weight of the load on theplatform will be carried upon the centers of the screws.

What I claim is:

1. In a device of the class described, the combination of longitudinalwagon raising means, a base plate at each end of the wagon raisingmeans, obliquely disposed standards mounted on said base plates,obliquely disposed screw shafts, each journaled at one end in the baseplates and at the other end in the top of the standards, a non rotatablenut on each of said screw shafts having laterally extending ridges, apart rockably related to said nut and provided with laterally extendingarms and means for connect-ing saidrockable part with the platform.

2. In a vdevice of the class described, the combinationof a platform, ascrew shaft at each end of the platform, means connecting each'end ofthe platform with the adjacent screw whereby the platform is elevated orlowered by the operation of said screws, a transverser shaft extendinglengthwise of 'said platform provided with gearing for simultaneouslyoperating said screw shafts, al countershaft and gearing connecting thecountershaft with the aforesaid transverse shaft and the clutch foralternately operating the transverse shaft in opposite direc` tions fromthe countershaft.

3. In a device of the class described, the combination of a platform, ascrew at each end of the platform, a nut on each screw, arms connectedwith each of said nuts, one on each side projecting tangentiallytherefrom transversely of the wagon raising means, means connecting saidplatform with said nuts to cause the platform to be raised or loweredwith the turning of the screws.

4. In a device of the class described, the combination with screws, eachprovided with a suitable nut thereon, a rockable casting carried uponeach nut, each provided with an arm on each side thereof extending lat-`erally therefrom in a plane tangential to each screw, and a suitableplatform interposed between the screws and supported in connection withsaid laterally extending arms.

5. In a device of the class described, the combination with a platform,of mechanism for raising and lowering said platform, comprising rotaryscrews, nuts thereon, arms supported in connection with nuts, one oneach side thereof extending transversely of the length of the platform,and connected with said platform, means for turning said screwsdifferentially to cause the platform to be raised slowly in onedirection of its movement and in the reverse direction of its movementto cause the. platform to be lowered rapidly and means operated by themoving platform to automatically stop the jupward and downward movementof the same.

6. In a device of the class described, the combination with a platform,of mechanism for raising and lowering said platform, comprising rotaryscrews, nuts thereon, means rockably supported on said nuts and prosoYvided with arms, one on each side extending transversely ofthe length ofthe platform and connected therewith, means for turning the screwsdifferentially to raise and lower the platform, and means operated bythe moving platform to automatically stop the upward and downwardmovement of the same.

7. In a device of the class described, the combination with a platform,of mechanism for raising and lowering same, comprising verticallysupported screws, one upon each side thereof, nuts on said screwsprovided with laterally extending ridged part-s, cast` ings embracingsaid nuts and supported thereon in a rockable manner, arms one on eachside of said castings and bearing outwardly therefrom in a linetangential thereto and at right angles with a line drawn from one .screwto the other, means for turning the screws and means for connecting thesaid arms with the end of the platform.

8. ln a device of the class described, the combination with screws, eachprovided with a suitable nut thereon, a rockable casting carried on eachnut, means for supporting the ends of the platform, on a line throughthe centers of the screws at right angles with a line drawn from oneside of the jack to the other through the screws, and the height of thescrews, comprising arms connected with said rockable nuts.

9. In a device of the class described, the combination with a platform,of mechanism for raising and lowering said platform, colnprising rotaryscrews, nuts on said screws having laterally extending ridges, rockableparts connected with the platform, and supported upon the laterallyextending bearings of said nuts, and interengaging parts on saidrockable parts for facilitating,y the rocking of the parts together and.for hold ing the nuts from rotation.

10. In a device of the class described, the combination of a platform,of a screw each side thereof, a nut on each of said screws provided withridges extending transversely of a line drawn from one screw to theother, and a rockable part at each end of said platform, engaging thesaid bearings of the nuts, f

and means operated by the platform to automatically stop the upward anddownward movement of said wagon raising meansY In testimony whereof Ihave affixed my signature, in presence of two witnesses.

FERDINAND J. FELDT.

lVitnesses MARY E. CoMEGYs, H. V. GIBSON.

